Linux Kernel  3.7.1
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ax25_std_subr.c
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1 /*
2  * This program is free software; you can redistribute it and/or modify
3  * it under the terms of the GNU General Public License as published by
4  * the Free Software Foundation; either version 2 of the License, or
5  * (at your option) any later version.
6  *
7  * Copyright (C) Jonathan Naylor G4KLX ([email protected])
8  */
9 #include <linux/errno.h>
10 #include <linux/types.h>
11 #include <linux/socket.h>
12 #include <linux/in.h>
13 #include <linux/kernel.h>
14 #include <linux/timer.h>
15 #include <linux/string.h>
16 #include <linux/sockios.h>
17 #include <linux/net.h>
18 #include <net/ax25.h>
19 #include <linux/inet.h>
20 #include <linux/netdevice.h>
21 #include <linux/skbuff.h>
22 #include <net/sock.h>
23 #include <asm/uaccess.h>
24 #include <linux/fcntl.h>
25 #include <linux/mm.h>
26 #include <linux/interrupt.h>
27 
28 /*
29  * The following routines are taken from page 170 of the 7th ARRL Computer
30  * Networking Conference paper, as is the whole state machine.
31  */
32 
34 {
36 }
37 
39 {
40  ax25->condition = 0x00;
41  ax25->n2count = 0;
42 
43  if (ax25->modulus == AX25_MODULUS)
45  else
47 
48  ax25_calculate_t1(ax25);
49  ax25_stop_idletimer(ax25);
50  ax25_stop_t3timer(ax25);
51  ax25_stop_t2timer(ax25);
52  ax25_start_t1timer(ax25);
53 }
54 
56 {
57  if (ax25->condition & AX25_COND_OWN_RX_BUSY)
59  else
61 
63 
64  ax25_calculate_t1(ax25);
65  ax25_start_t1timer(ax25);
66 }
67 
69 {
70  if (ax25->condition & AX25_COND_OWN_RX_BUSY)
72  else
74 
76 }
77 
79 {
80  if (ax25->condition & AX25_COND_OWN_RX_BUSY)
82  else
84 
86 }